/[fenfire]/fenfire/docs/pegboard/swamp_rdf_api--tjl/peg.rst
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revision 1.5 by mudyc, Tue Apr 8 12:03:02 2003 UTC revision 1.6 by tjl, Wed Apr 9 19:24:47 2003 UTC
# Line 80  Issues Line 80  Issues
80    
81      Quite likely code generation will be used.      Quite likely code generation will be used.
82    
83        However, we shall also provide less efficient but more comfortable
84        versions which take null as the wildcard.
85    
86    - The non-OO approach is not nice for some code. Could we use OO instead?
87    
88        RESOLVED: No. Need for speed.
89    
90        HOWEVER, it's pretty simple to build an OO API on top for the less
91        speed-sensitive locations ::
92    
93            class OONode {
94                Graph g;
95                Object node;
96                ...
97            }
98    
99        and use it as ::
100    
101            person = OONode(thePersonNode);
102            name = person.getProperty(nameProperty);
103    
104    - What should the RDF model/graph/thing be called? You know, the
105      set of triples?
106    
107        RESOLVED: Graph. A nice word, and has images with it that may
108        help us leave the word "space" behind.
109    
110    - how should the methods in Graph be named?
111    
112        Open. I'm still flexible about this.
113    
114    - What should the resource mapper and its methods be called? RMap?
115      Nodes?
116    
117        Still open, under consideration.
118    
119  Problems with jena  Problems with jena
120  ==================  ==================
# Line 102  this was not the case. Line 137  this was not the case.
137    
138  Efficiency is also important: in order for Fenfire to work properly,  Efficiency is also important: in order for Fenfire to work properly,
139  *ALL* searches within memory must be O(1). Jena makes no guarantees,  *ALL* searches within memory must be O(1). Jena makes no guarantees,
140  since its goal is to support different implementations of Model.  since its goal is to support different implementations of Graph.
141  For us, the different implementations do not matter so much as raw  For us, the different implementations do not matter so much as raw
142  efficiency of the memory-based implementation. This is quite different  efficiency of the memory-based implementation. This is quite different
143  from most RDF uses, since the usual scenario is that there is not too much  from most RDF uses, since the usual scenario is that there is not too much
# Line 156  The ShortRDF class shows what a mess the Line 191  The ShortRDF class shows what a mess the
191  To avoid this, we'll drop the semantics (subject,predicate,object) for now  To avoid this, we'll drop the semantics (subject,predicate,object) for now
192  and name all methods according to a general scheme. ::  and name all methods according to a general scheme. ::
193    
194      public interface ConstFirstOrderModel {      public interface ConstFirstOrderGraph {
195          public Object find1_11X(Object subject, Object predicate);          public Object find1_11X(Object subject, Object predicate);
196          public Object find1_X11(Object predicate, Object subject);          public Object find1_X11(Object predicate, Object subject);
197          ...          ...
# Line 164  and name all methods according to a gene Line 199  and name all methods according to a gene
199          ...          ...
200      }      }
201    
202      public interface FirstOrderModel extends ConstFirstOrderModel {      public interface FirstOrderGraph extends ConstFirstOrderGraph {
203          public void set1_11X(Object subject, Object predicate, Object object);          public void set1_11X(Object subject, Object predicate, Object object);
204          public void set1_X11(Object subject, Object predicate, Object object);          public void set1_X11(Object subject, Object predicate, Object object);
205          ...          ...

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